Our caps are shrinking, and here’s part of that story. “On Thin Ice in the Bering Sea,” a series of four short films about two communities – Yup’ik subsistence hunters on St. Lawrence Island and polar scientists aboard the Coast Guard Cutter Healy – and how they bear witness to the changes wrought by global warming in the northern Bering Sea. The films are a Hott Production of Florentine Films/Hott Productions produced in Association with the Clark Science Center at Smith College. Produced by Lawrence Hott and Tom Litwin. You can watch the series now online at the NOVA PBS web site, on YouTube or via iTunes. or click on this link http://www.pbs.org/wgbh/nova/extremeice/thinice.html